i might be on to something here, have the back of lets say Baker airwings mirror'd hhhmmmmmm i better get a pat# before someone steels my idea
or mirrors that clip on to the outside of stock mirrors like the kind that goes on pickup trucks mirrors when their towing something hhhhmmmmmm
I've not seen any bigger than the OEM mirrors. The Valk's mirrors are pretty big already, but you might be able to find something through one of the cycle goods suppliers (dennis kirk, JC Whitney, etc.).
I do like the idea of the big rig mirrors though...